4.5 Metallic bonding

Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group.

Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group.

Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group.

Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group whereas the melting points of the group 17 elements (F → I) increase down the group.

Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group whereas the melting points of the group 17 elements (F → I) increase down the group.

Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group whereas the melting points of the group 17 elements (F → I) increase down the group.

Outline why solid calcium is a good conductor of electricity.

Outline why solid calcium is a good conductor of electricity.

Outline why solid calcium is a good conductor of electricity.

Outline why solid calcium is a good conductor of electricity.

Outline why solid calcium is a good conductor of electricity.

Outline why solid calcium is a good conductor of electricity.

Which series shows the correct order of metallic bond strength from strongest to weakest?

A.  $\mathrm{Na}>\mathrm{K}>\mathrm{Rb}>\mathrm{Mg}$

B.  $\mathrm{Mg}>\mathrm{Rb}>\mathrm{K}>\mathrm{Na}$

C.  $\mathrm{Rb}>\mathrm{K}>\mathrm{Na}>\mathrm{Mg}$

D.  $\mathrm{Mg}>\mathrm{Na}>\mathrm{K}>\mathrm{Rb}$

Which series shows the correct order of metallic bond strength from strongest to weakest?

A.  $\mathrm{Na}>\mathrm{K}>\mathrm{Rb}>\mathrm{Mg}$

B.  $\mathrm{Mg}>\mathrm{Rb}>\mathrm{K}>\mathrm{Na}$

C.  $\mathrm{Rb}>\mathrm{K}>\mathrm{Na}>\mathrm{Mg}$

D.  $\mathrm{Mg}>\mathrm{Na}>\mathrm{K}>\mathrm{Rb}$

Alloying metals changes their properties. Suggest one property of magnesium that could be improved by making a magnesium–CNT alloy.

Alloying metals changes their properties. Suggest one property of magnesium that could be improved by making a magnesium–CNT alloy.

Alloying metals changes their properties. Suggest one property of magnesium that could be improved by making a magnesium–CNT alloy.

Describe the bonding in iron, Fe (s).

Describe the bonding in iron, Fe (s).

Describe the bonding in iron, Fe (s).

Bismuth has atomic number 83. Deduce two pieces of information about the electron configuration of bismuth from its position on the periodic table.

Bismuth has atomic number 83. Deduce two pieces of information about the electron configuration of bismuth from its position on the periodic table.

Bismuth has atomic number 83. Deduce two pieces of information about the electron configuration of bismuth from its position on the periodic table.

Bismuth has atomic number 83. Deduce two pieces of information about the electron configuration of bismuth from its position on the periodic table.

Bismuth has atomic number 83. Deduce two pieces of information about the electron configuration of bismuth from its position on the periodic table.

Bismuth has atomic number 83. Deduce two pieces of information about the electron configuration of bismuth from its position on the periodic table.

Nitrogen (IV) oxide exists in equilibrium with dinitrogen tetroxide, N₂O₄(g), which is colourless.

2NO₂ (g) ⇌ N₂O₄ (g)

Nitrogen (IV) oxide exists in equilibrium with dinitrogen tetroxide, N₂O₄(g), which is colourless.

2NO₂ (g) ⇌ N₂O₄ (g)

Nitrogen (IV) oxide exists in equilibrium with dinitrogen tetroxide, N₂O₄(g), which is colourless.

2NO₂ (g) ⇌ N₂O₄ (g)

Nitrogen (IV) oxide exists in equilibrium with dinitrogen tetroxide, N₂O₄(g), which is colourless.

2NO₂ (g) ⇌ N₂O₄ (g)

Nitrogen (IV) oxide exists in equilibrium with dinitrogen tetroxide, N₂O₄(g), which is colourless.

2NO₂ (g) ⇌ N₂O₄ (g)

Nitrogen (IV) oxide exists in equilibrium with dinitrogen tetroxide, N₂O₄(g), which is colourless.

2NO₂ (g) ⇌ N₂O₄ (g)